random_lib

A tiny Javascript library for generate any random stuffs. It focus on how to quickly pick a random enough stuff without caring too much about correct probabilities or etc..xD

Installations:

• Runnpm install rand-lib to install from NPM.
• Usage:

  var rand = require('rand-lib');
  rand.string(12); //[]2Sf1aLt'/4
  rand.string(12, { number:true, lower:true}); //mwzj338km816

Features:

1. Basic functions:

• fromTo(f,t): pick a random number from "f" to "t".
• pickIn(arr): pick a random element in an array.
• inRanges(arr): pick a random number in a number of given ranges. E.g:rand.inRanges([[1,5],[7,15]]) give a random number between (1,5) and between (7,15)
• rand.give(arr).<func>(): prepare your custom set/array and give you ability to chaining next withpick() andshuffle(). E.g:rand.give(['rock','paper','scissor']).pick();``rand.give([2,4,5,6,7]).shuffle();

2. Numbers:

• Currently support random integer up to 32-bit with signed/unsigned type.E.g:
  • rand.int8() /rand.uint8()
  • rand.int16() /rand.uint16()

3. Characters:

• char(): generate a random character
• digit(): generate a random digit number from 0-9
• specialChar():
• letter(): generate a random character from a-z, can be capital or not
• upperLetter(): no need to explain
• lowerLetter(): same above
• string(length,option): generate a random string with customize option

  {
    "number": true,
    "lower": true,
    "upper": true,
    "special": true
  }

4. Misclaneous:

• uuid(): return a random UUID (v4).
• color(): return hexadecimal code of a random color
• contrastColor(hexcolor): return a random color which is contrast to given color. It's useful when you need to generate a pair of background/foreground color or a set of color scheme for charts.
• card(mode): pick a random card in a deck.
  • mode: specify how we returned deck's 4 suits
    • long: default - "Spade", "Heart", "Diamond", "Club"
    • short: "S", "H", "D", "C"
    • symbol: "♠", "♥", "♦", "♣"